Estonia mainly uses a track gauge of 1,520 mm (4 ft 11+27⁄32 in) or 1,524 mm (5 ft), inherited from the Russian Empire times.
Since post-independence all renovated tracks owned by Eesti Raudtee have gauge 1,524 mm.
There has been a proposal from the EU to build a standard gauge railway from Tallinn to Warsaw, the Rail Baltica.
Historically Estonia had 750 mm (2 ft 5+1⁄2 in) narrow-gauge installations.
The tram network in Tallinn has a track gauge of 1,067 mm (3 ft 6 in).